Here is the trial version of World Guidance which was released back in September when the the full version was scheduled for November.
http://gianism.jp/article.aspx?a=32
Though it does appear to be exclusively on the anime version, there should be some newly disclosed material, such as in depth coverage of the Battle of Kyoto, the Active Eagle's development etc.
This makes me wonder whether they will release another settings and designs book for the Total Eclipse game, but an artbook is more likely.